Stuffing box



Sept. 21, 1937. I E. J. YOCkEY STUFFING BOX Filed May 27, 1955 3mm Emil J. yea/fey 542:; BMW

Patented Sept. 21, 1937 UNITED STATES PATENT OFFICE 2,093,627 STUFFING BOX Emil J. Yockey, Mackay, Tex.

Application May 27, 1935, Serial No. 23,671 2 claims. (Cl. 286-26) My in ention re ates to stufi n bo es and h soft metal sleeve outwardly to clamp the two particular adaptation to stufiing boxes to be emsleeves together into the annular groove l2. ployed about a longitudinally slidable rod. To hold the outer flexible sleeve H tightly It is an object of the invention to provide a against the pump rod I employ elastic bands 5 Slillifihg bOX wh h is adapted to preserve a. seal [3 and I4. These bands may be made of a good upon the rod by resi ient means holding the same quality of rubber of smaller normal diameter against the rod. than that of the packing sleeve and are stretched It is a fu t r object f t e invention o p oor placed under strain and fitted over the flexible Vid a p ki f r Stufiihg boxes in Wh h t packing sleeve. They tend to exert a. constant packing is secured to the glandso that it may inward pressure,holding the packing sleeve tight- 10 be handled .as a unit with the gland in use. 1y against the rod. The band [3 is preferably .It is a further object of the invention to prO- placed at a position opposite the end of the vid a m n d metal and pliable p k ng unit inner metal sleeve It. The sleeve 14 is shown which may be held in position partly by the fluid at the end of the packing sleeve. It is to be 15 pressure which is to be packed ofi. understood that while I have shown these flexible Another object of the invention is to provide a members as made up of rubber, other elastic packing uni Whi may be easily and cheaply bands of metal, or otherwise, may be employed manufactured and quickly applied in service. in the place thereof.

In the drawing herewith, Fig. 1 is a central As a further precaution I place a flexible gasket longitudinal section through a smiling box emmember I5 between the gland 9 and the outer 0 bodying the invention. end of the stufiing box to guard against the Fig. 2 is a side elevation of the packing memleakage of fluid past the threaded connection 8. her and gland removed from the box. 7 It will be seen that any fluid tending to escape I have shown my invention as applied to a outwardly into the stuffing box may be received pump on which it performs the service of sealing in the chamber I and tend to exert a force against 25 about the reciprocating pump rod 3. The tubing the outer surface of the packing sleeve and assist or cylinder in which the piston is adapted to work in holding it firmly in sealing engagement with is shown at 4. This tubing is threaded interiorly the rod. at its upper end for attachment at 5 to the stufling My packing member will be found to be simple box member 6. and compact in use and adapted to maintain a d The stuffing box 6 has its outer end formed seal with the rod for exceptionally long periods with .an interior chamber 1 and the upper end of time without leakage. The employment of is threaded at 8 for engagement with the threaded elastic bands around the outer circumference of gland member 9. the sealing sleeve acts to maintain a sealing The gland is formed with a polygonal exterior engagement between the sleeve and rod even after 35 on its outer end at II) for engagement with a considerable wear in use has taken place. This wrench whereby it may be screwed into the outer therefore materially extends the life of the sealend of the stufiing box. The interior of the tubuing member. lar nut or gland member 9 is recessed to receive What is claimed as new is:

an inner sleeve 16 of soft metal such as copper l. A stufiing box for rods, a tubular gland 40 or brass. Said sleeve extends downwardly and thereon, a metal Sleeve fitting n a d d. 9

projects beyond the inner end of the gland and flexible packing sleeve outside s eta sleev is of such Size as to fit closely against the pump said sleeves extending from said gland into said e messianic; trai er .5 ac ing 0 p s e 1 n l Outside the metal sleeve l6 and fitting closely thereon is a packing sleeve I l of flexible material gg g ggg g g gland and fix Sam Sleeves to such as leather or rubberized composition. Said 2. A unit for providing a seal about a rod comsleeve fits tightly over the metal sleeve and exprising a stufi-mg box, a tubular gland mounted tendsinwardly beyondthe metal sleeve to apomt thereon, a metal sleeve fitting in said gland, a 50 spacedfrom the lower end of the Stumng flexible packing sleeve outside said metal sleeve, It is secured with the metal sleeve 16 to the said sleeves extending from said gland into said gland member 9 y the expansion of the S e v box, and an elastic band surrounding said packinto an annular groove or recess l2 on the interior ing sleeve and exerting an inward tension thereon f t a d m r Th s is don y pla in to hold said sleeve in sealing engagement with 55 the metal and the flexible sleeve together in a rod, position within the gland and then expanding the EMIL J. YOCKEY. 

